Tyrannosaurs - (T-Rex cousins)

This catalog includes other species of Tyrannosaur dinosaurs which were early relatives to the Tyrannosaurus rex. These Tyrannosaurid dinosaurs lived during the upper Cretaceous period in the northwest US. Fossil remains include well preserved teeth, bones, and claws, and are highly valued by collectors. These top quality specimens were all legally collected from private lands in the northwestern US.

Tyrannosaurs from the late Cretaceous (Campanian) of northern North American include Albertosaurus, Daspletosaurus and Gorgosaurus. Fossils of these Campanian tyrannosaurs can found in the Judith River and Two Medicine Formations of northern Montana and the equivalent formations in Alberta. All of these tyrannosaurs are related and are early relatives to the Tyrannosaurus rex which appears at end of the Cretaceous Period about 66 mya. All three of these tyrannosaurs are smaller than T. rex. The Daspletosaurus and Gorgosaurus were similarly sized and lived together during the same time period. They are approximately 30 foot long and weighed up to 5000 lbs. Albertosaurus had a similar length of up to 30 feet, but were lighter with a maximum weight of 4000 pounds. Alberotsaurus appears to evolved slightly later than the its two Judith River Formation tyrannosaur relatives. Alberotsaurus was believed to be fast movers and there is trackway evidence that showed they hunted in packs. These tyrannosaurs would have feed on Hadrosaurs (Duck Bill dinosaurs) and ceratopsians (Horned dinosaurs).

Albertosaurus, Daspletosaurus and Gorgosaurus possessed teeth with similar size and design making identification of isolated teeth near impossible.Daspletosaurus may be slightly larger than other two tyrannosaurs ,and it was in the same sub-family as T. rex. So, Daspletosaurus is more closely related to T. rex and may have had tooth characteristics more similar to T. rex. An argument was made that 3-1/2”+ crowns that have an oval profile may be Daspletosaurus teeth. A tyrannsaour tooth found in the Two Medicine Formation of Montana may be restricted to Daspletosaurus or Gorgosaurus. So, identification with certainty of the Campanian tyrannosaur teeth is a challenge. I will make a case for specie likelihood based on size, robustness and location / formation found. The bottom line is these tyrannosaur teeth from the late Cretaceous (Campanian) of northern North American are high quality and exceptional teeth and are fantastic examples of an early relative of Tyrannosaurus rex.

Fact : Restoration and repair of dinosaur teeth is quite common. So, here is a helpful restoration / repair check –> The tyrannosaur teeth of the late Cretaceous (Campanian) of northern North American all appear to be fluorescent. With a good black light, you can easily see cracks or areas of restoration which are not fluorescent. Have a look!

A GEM Tyrannosaur tooth from the late Cretaceous on northern North America. A July 2018 Fossil of the Month. This tooth could Albertosaurus, Gorgosaurus or Daspletosaurus - see Detailed Discussion below.This tooth measures 2" - a large sized Tyrannosaur tooth.The enamel is very high quality with excellent color / patina. Anterior serrations and posterior serrations are excellent. Serrated to the tip. No cracks or restoration. Legally collected on private land in the Two Medicine Fm., Chouteau Co., Montana. Authenticity guaranteed. Probably an excellent Gorgosaurus tooth based on size and locality found. Museum quality tooth. Best of the BEST!

A GEM Tyrannosaur tooth from the late Cretaceous on northern North America. A July 2018 Fossil of the Month. This tooth could Albertosaurus, Gorgosaurus or Daspletosaurus - see Detailed Discussion below.This tooth measures 2" - a large sized Tyrannosaur tooth. A big "beefy" tooth (1"W). The enamel is excellent quality with excellent color / patina. Anterior serrations and posterior serrations are excellent. Serrated to the tip. No cracks and restoration. Legally collected on private land in the Judith River Fm., Hill Co., Montana. Authenticity guaranteed. Probably an excellent Daspletosaurus tooth based on size and roundness of the tooth cross-section. Museum quality. Best of the BEST!

A Top Quality Tyrannosaur tooth from the late Cretaceous on northern North America. This tooth could Albertosaurus, Gorgosaurus or Daspletosaurus - see Detailed Discussion below.This tooth measures 2-1/8" - a large sized Tyrannosaur tooth.The enamel is excellent quality with excellent color / patina. Anterior serrations and posterior serrations are very good. Serrated to the tip. One crack stabilized and no restoration. Legally collected on private land in the Judith River Fm., Mussellshell Co., Montana. Authenticity guaranteed. Probably an excellent Daspletosaurus tooth based on size and roundness of the tooth cross-section. Museum quality.

A Top Quality Tyrannosaur tooth from the late Cretaceous on northern North America. This tooth could Albertosaurus, Gorgosaurus or Daspletosaurus - see Detailed Discussion below.This tooth measures 1-15/16" - a large sized Tyrannosaur tooth. A big "beefy" tooth. The enamel is excellent quality with good color / patina. Anterior serrations and posterior serrations are very good. Serrated to the tip. No cracks or restoration. Legally collected on private land in the Judith River Fm., Hill Co., Montana. Authenticity guaranteed. Probably an excellent Daspletosaurus tooth based on size and roundness of the tooth cross-section. Museum Quality tooth.

A Top Quality Tyrannosaur tooth from the late Cretaceous on northern North America. This tooth could Albertosaurus, Gorgosaurus or Daspletosaurus - see Detailed Discussion below.This tooth measures 1-13/16" - a large sized Tyrannosaur tooth.The enamel is excellent quality with fantastic color / patina. Anterior serrations and posterior serrations are very good. No cracks or restoration. Legally collected on private land in the Judith River Fm., Musselshell Co., Montana. Authenticity guaranteed. Probably an excellent Daspletosaurus tooth based on size and roundness of the tooth cross-section.

A GEM Tyrannosaur tooth from the late Cretaceous on northern North America. This tooth could Albertosaurus, Gorgosaurus or Daspletosaurus - see Detailed Discussion below.This tooth measures 1-9/16" - a good sized Tyrannosaur tooth. The enamel is very high quality with fantasic color - the Leopard tooth! Anterior serrations and posterior serrations are excellent. Serrated to the tip. No cracks or restoration. Legally collected on private land in the Judith Fm., Hill Co., Montana. Authenticity guaranteed. Probably a Gorgosaurus tooth based on size. Museum quality tooth.

A GEM Tyrannosaur tooth from the late Cretaceous on northern North America. This tooth could Albertosaurus, Gorgosaurus or Daspletosaurus - see Detailed Discussion below.This tooth measures 1-1/4" - a young Tyrannosaur tooth.The enamel is very high quality with excellent color. Anterior serrations and posterior serrations are excellent. Serrated to the tip. No cracks or restoration. Legally collected on private land in the Two Medicine Fm., Glacier Co., Montana. Authenticity guaranteed. Probably a joung Gorgosaurus tooth based on size and locality. Museum quality tooth.

A GEM Tyrannosaur tooth from the late Cretaceous on northern North America. A July 2018 Fossil of the Month. This tooth could Albertosaurus, Gorgosaurus or Daspletosaurus - see Detailed Discussion below.This tooth measures 1-11/16" - a good size Tyrannosaur tooth.The enamel is very high quality with excellent color. Anterior serrations and posterior serrations are excellent. Searrated to the tip. No cracks or restoration. Legally collected on private land in the Judith River Fm., Hill Co., Montana. Authenticity guaranteed. Probably an extra large Albertosaurus tooth based on size. Museum Quality tooth. Best of the BEST!

A Top Quality Tyrannosaur tooth from the late Cretaceous on northern North America. This tooth could Albertosaurus, Gorgosaurus or Daspletosaurus - see Detailed Discussion below.This tooth measures 1-11/16" - a good size Tyrannosaur tooth.The enamel is very high quality with excellent color. Anterior serrations are good and posterior serrations are excellent. No cracks or restoration. Legally collected on private land in the Judith River Fm., Hill Co., Montana. Authenticity guaranteed. Probably an Albertosaurus tooth based on size.

A Top Quality Tyrannosaur tooth from the late Cretaceous on northern North America. This tooth could Albertosaurus, Gorgosaurus or Daspletosaurus - see Detailed Discussion below.This tooth measures 1-5/8" - a good size Tyrannosaur tooth. Definitely a Tyrannosaur - check out the cross-sectional width. The enamel is very high quality with fantastic color. Anterior serrations and posterior serrations are excellent. No cracks or restoration. Legally collected on private land in the Judith River Fm., Hill Co., Montana. Authenticity guaranteed. Probably an Albertosaurus tooth based on size.

A Quality Tyrannosaur tooth from the late Cretaceous on northern North America. This tooth could Albertosaurus, Gorgosaurus or Daspletosaurus - see Detailed Discussion below.This tooth measures 1-9/16" - a good sized Tyrannosaur tooth.The enamel is good quality with excellent color. Anterior serrations and posterior serrations are good with a worn tip. No cracks or restoration. Legally collected on private land in the Judith River Fm., Hill Co., Montana. Authenticity guaranteed. Probably an excellent Daspletosaurus tooth based on size and roundness of the tooth cross-section.

A rare, ingested Tyrannosaur tooth from the late Cretaceous on northern North America. This tooth could be an Albertosaurus, Gorgosaurus or Daspletosaurus - see Detailed Discussion below. This tooth measures 1-1/2" - a good size Tyrannosaur tooth. Definitely a Tyrannosaur - check out the cross-sectional width. The enamel is mottled due to ingestion. Anterior serrations and posterior serrations are present. No cracks or restoration. Legally collected on private land in the Judith River Fm., Wheatland Co., Montana. Authenticity guaranteed.

A rare Pre-maxillaty (front), Top Quality Tyrannosaur tooth from the late Cretaceous on northern North America. This tooth could be Albertosaurus, Gorgosaurus or Daspletosaurus - see Detailed Discussion below. This tooth measures 11/16" - definitely a juvenile. Definitely a Tyrannosaur - check out the cross-sectional width. The enamel is excellent with great color. The serrations are visible, but worn. No cracks. Legally collected on private land in the Judith River Fm., Hill Co., Montana. Authenticity guaranteed.